I must admit I am skeptical about the notion of the "isms and the ists" ... it seems to me that we are more concerned with keeping up with the latest theory than we should be ... but here are some that seemed to pique peoples interest ... feel free to add
Connectivism
http://en.wikipedia.org/wiki/Connectivism
http://www.elearnspace.org/Articles/connectivism.htm
Rhizomes as a metaphor http://www.connectivism.ca/
What Google Scholar threw up about connectivism...
http://scholar.google.com.au/scholar?q=connectivism+learning+theory&hl=en&as_sdt=0&as_vis=1&oi=scholart
Enactivism
http://en.wikipedia.org/wiki/Enactivism_(psychology)
What Google Scholar threw up about enactivism ...
http://scholar.google.com.au/scholar?hl=en&q=Enactivism&btnG=Search&as_sdt=0%2C5&as_ylo=&as_vis=1